What are some main monuments on Venus?
Planet Venus, covered with a strong atmosphere of carbon dioxide and nitrogen containing reflective clouds of high altitude of sulfuric acid, was very mysterious for astronomers until recently. Before investigating Venus with a radar penetrating the cloud in 1961, astronomers knew absolutely nothing about their surface. Some writers speculated that there was a warm tropical world under the clouds.
They were right about the warm part. The microwave and infrared radiometers mounted on Mariner 2, the spacecraft, which in 1962 performed the flying Venus in 1962, revealed that the surface was incredibly hot-425 ° C (797 ° F), hot enough to melt lead. This crushed all speculations of life on the surface. On the Plus side, it was found that cloud-tens of Venus were relatively cool, comparable to temperatures on the ground. It was found that the pressure on the surface was about 92 times larger than on the sea level on the ground, similar to a pressure of 1 km (0.62 Mi) below the ocean.
thhruby seventies and 1980s BYlo on Venus carried out intensive investigation, both using radar and spacecraft based on Earth. Earth -based radar only reveals surface features greater than about 5 km (3 Mi), so further research requires probes.
It has been found that the surface of Venus is very flat, which is the result of the massive weight of its atmosphere and a lack of tectonic activity. The highest mountains are Maxwell Montes, which is the highest point of 12 km (7.4 miles) above the surface. Due to this altitude, Maxwell Montes is the coldest and least pressure on the surface of Venus, but would still kill any man in seconds. The distance between the highest and the lowest point on Venus is only 13 kilometers (8.1 miles), while the ground is about 20 kilometers (12.4 million). 51% of the Venus surface is located up to 500 meters (1640 feet) from the middle radulant (Venus's equivalent of the "sea level").About 10% of the surface of the planet consists ofE of two main "continents" called Highlands. These include Aphrodite Terra, the size of Africa and Ishtar Terra, which contains Maxwell Montes. Together with these Highlands, there are several large uprisings created in volcanic events, including Beta Regio, Phoebe Regio, Themis Regio, Alpha Regio, Eistla Regio, Bell Regio and Tholus Regio. The largest of these volcanoes were discovered in the first radar surveys in the early 1960s.
Venus has about 900 impact craters, of which almost all of which are the diameter of greater than 30 kilometers (18 miles). This is because smaller asteroids burn in a strong atmosphere before they can hit the surface. If the asteroid has momentum to get through the atmosphere, it is certain to leave a large crater. Several known craters include Danilova, Aglaonice and Saskja. All of them were given names, usually after a female figure in history and mythology.
Other features on Venus include volcanoes that can be active and also mysterious structures called Arachnoids Nikde else. Arachnoids consist of concentric ovals surrounded by complex fracture networks and can have an average of 200 km (124 million). They may have volcanic origin or be created through some other process.